NAI’s 109 is an AC- or DC-Powered Power Monitor used to monitor voltage, frequency, and phase characteristics of single- or three- phase power lines. This allows normal operation of system loads when the power-line characteristics are within predetermined limits.The 109 monitor provides three separate control circuits and output relays indicating the condition of each line characteristic. It is ideally suited for rugged defense and industrial applications.
NAI's YMA and YQA Power Monitors are used to monitor voltage, frequency, and phase characteristics of single- or three-phase power lines. This allows normal operation of system loads when the power-line characteristics are within predetermined limits.High and low voltage and frequency limits, and "pick-up" and "drop-out" time delay are field-adjustable using potentiometers. These power monitors are ideally suited for rugged defense and industrial applications.
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